Patents by Inventor Lauren P. Countryman

Lauren P. Countryman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adaptive digital filter which is responsive to the rate of change of an input signal
    Patent number: 5150317
    Abstract: The time constant of an adaptive digital filter is regulated as a function of the magnitude of the rate of change of the input signal to the filter. When the input signal has a large step input or it changes rapidly, the time constant is shortened; however when the input signal has a small step input or it changes more slowly, the time constant of the filter is increased.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: September 22, 1992
    Assignee: The Boeing Company
    Inventor: Lauren P. Countryman